﻿0)1 the BomhyJiid Favna of South Africa (Blptera). 95 



Mouth opeuing rather small, horizontal or nearly so ; proboscis twice 

 as long as the head ; palpi very long and thin, pointed, briefly pilose. 

 Thorax and scutellum without bristles, with only a few thin bristlv 

 hairs ; pleurae almost liare ; no metapleural tuft. Squamae small, 

 with short and thin marginal hairs. Abdomen elongate, conical, with 

 bristles at the hind border of the segments ; male genitalia exserted, 

 appendiculate below ; female genitalia very peculiar. Legs ]onf% 

 almost bare, without spines or spicules ; tarsi distinctly thickened ; 

 pulvilli and claws well developed. Wings long and broad; second 

 longitudinal vein straight ; cubital fork long and narrow ; discal cross- 

 vein placed after the middle of the discoidal cell ; only three posterior 

 cells present, the first being broadened at end, anal cell closed and 

 provided witli a rather long stalk. Ambient vein complete ; axillary 

 lobe broad; alula small, rounded, ciliated. The stumps of veins on 

 the outer border of the discoidal cell, figured by both Wiedemann and 

 Macquart, are the rudimeut of the vein dividing the second from the 

 third posterioi- cell — a vein which in tlie present species is wanting, the 

 two cells being fused into one. 



The new genus Pseudenrpis is based on the same type-species on 

 which Bigot has founded his undescribed genus Pseudoamictus. I 

 think that the Amidus heteropterus of Wiedemann is very different 

 from that interpreted by Macquart and accepted l)y me ; this last one 

 has only 3, Avhile the former has 4 posterior cells. Bigot's species 

 is evidently the same as that of Macquart. 



Type : Pseudempis heteroptera. 



PsEUDEMPis HETEROPTERA, Wiedemann (1821). 



An elongate species, with wholly infuscated wings, strongly recalling 

 the European Em pis tesseJlata. 



Originally described from the Cape, there is in the collection a 

 single couple — the male from Cape Town (L. Pcringuey) and the 

 female from Namaqualand, O'Okiep (Cape), September, 1890 (R. M. 

 Lightfoot). 



Length of body 10-10-5 mm.; of a wing 11-5-12 mm.; of the 

 wing expanse 24-26 mm. To Wiedemann's description may be 

 added : The hairs of the first antennal joint are of a very dark- 

 yellowish colour, or even blackish, chiefly in the male ; the moustache 

 is reduced to a tuft of hairs on each side, placed on the lower part of 

 the cheeks, yellow in the male and white in the female like the 

 beard and the hairs of the lower part of the occiput. The antennae 

 are black, but the first joint is grey-dusted ; proboscis black, 3 mm. 



